Question

24.5g KClO3 heated to give O2, which is allowed to react completely with H2 to form H2O. This H2 comes from Zn and H2SO4 reaction. The amount of Zn required for the purpose is

Joshi sir comment

2KClO3 ----------------------> 2KCl + 3O2

3O2 + 6H2 --------------------> 6H2O

6Zn + 6H2SO4 -------------------> 6ZnSO4 + 6H2

so 2 mole  KClO3  -----------------------------  6 mole Zn

now solve

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